In conclusion, "General Topology" by Engelking is a classic textbook that provides a comprehensive introduction to the field of general topology. Its influence and impact on the development of topology are undeniable, and it remains a valuable resource for students and researchers in mathematics.
Many topologists advise: use an accessible pirated PDF for daily reference if you own a legal physical copy (the "backup" argument). Others point out that Springer’s 2000s reprint of selected chapters, or the digital version available through some university subscriptions (e.g., SpringerLink’s "Classics in Mathematics" series occasionally includes Engelking chapters), offers a legal pathway. engelking general topology pdf